import com.google.common.collect.Sets;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.UUID;
import java.util.stream.Collectors;

public class Main {

  public static void main(String[] args) throws InterruptedException {

    String id = "c0e67372c9136321a83c49257cf79999";

    System.out.println(id.length());


    System.out.println(UUID.randomUUID().toString());
    System.out.println(UUID.randomUUID().toString().replace("-", ""));


  }


  private static void lock(int i) {
    System.out.println("lock " + i);
  }

  private static void unlock(int i) {
    System.out.println("unlock " + i);
  }
}
